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package FormValidator::Simple::Plugin::Math; |
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use warnings; |
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use strict; |
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use FormValidator::Simple::Constants; |
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use Math::Expression; |
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12735
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=head1 NAME |
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10
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FormValidator::Simple::Plugin::Math - Math evaluation for FormValidator::Simple |
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=head1 VERSION |
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Version 0.03 |
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=cut |
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our $VERSION = '0.03'; |
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=head1 SYNOPSIS |
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You can evalute the form data with math expression. |
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use FormValidator::Simple qw/Math/; |
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26
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my $result = FormValidator::Simple->check( $req => [ |
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category => [ 'NOT_BLANK', ['MATH', 'x % 100', '!0']], |
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### valid if category % 100 != 0 |
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]); |
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=head1 EVALUATION |
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['MATH', some_math_expression, is_what] |
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=head2 some_math_expression |
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C is the value to be passed. e.g. C |
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=head2 is_what |
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41
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Sets some number. |
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Switches the true-false evaluation if C starts with C. |
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=cut |
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47
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sub MATH{ |
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0
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0
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my ($self, $params, $args) = @_; |
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49
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0
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0
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my $calc = $args->[0] || 0; |
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0
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0
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my $equals = $args->[1] || 0; |
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my $data = $params->[0]; |
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0
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my $is = TRUE; |
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53
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0
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my $is_not = FALSE; |
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if ($equals =~ /^\!(\d+?)$/){ |
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0
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$equals = $1; |
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0
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$is = FALSE; |
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57
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0
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$is_not = TRUE; |
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58
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} |
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59
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elsif ($equals eq '!'){ |
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0
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$equals = 0; |
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61
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0
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$is = FALSE; |
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0
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$is_not = TRUE; |
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63
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} |
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64
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0
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0
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if ($equals =~ /[^\d]/ || $data =~ /[^\d]/){ |
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65
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0
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return TRUE; |
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66
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} |
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67
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0
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my $m = new Math::Expression; |
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68
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0
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$m->VarSetScalar('x',$data); |
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69
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0
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my $mtree = $m->Parse($calc); |
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70
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0
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my $value = $m->EvalToScalar($mtree); |
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71
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0
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0
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return ($value == $equals) ? $is : $is_not; |
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72
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} |
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73
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74
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=head1 AUTHOR |
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75
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76
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Yusuke Sugiyama, C<< >> |
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77
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78
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=head1 BUGS |
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79
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80
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Please report any bugs or feature requests to |
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81
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C, or through the web interface at |
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82
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L. |
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83
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I will be notified, and then you'll automatically be notified of progress on |
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84
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your bug as I make changes. |
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85
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86
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=head1 SUPPORT |
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87
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88
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You can find documentation for this module with the perldoc command. |
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89
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90
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perldoc FormValidator::Simple::Plugin::Math |
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91
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92
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You can also look for information at: |
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93
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94
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=over 4 |
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95
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96
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=item * AnnoCPAN: Annotated CPAN documentation |
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97
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98
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L |
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99
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100
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=item * CPAN Ratings |
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101
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102
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L |
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103
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104
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=item * RT: CPAN's request tracker |
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105
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106
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L |
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107
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108
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=item * Search CPAN |
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109
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110
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L |
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111
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112
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=back |
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113
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114
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=head1 ACKNOWLEDGEMENTS |
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115
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116
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=head1 COPYRIGHT & LICENSE |
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117
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118
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Copyright 2007 Yusuke Sugiyama, all rights reserved. |
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119
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120
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This program is free software; you can redistribute it and/or modify it |
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121
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under the same terms as Perl itself. |
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122
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123
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=cut |
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124
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125
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1; # End of FormValidator::Simple::Plugin::Math |